Trinuclear complexes M[Co(en)(2)(SO3)(2)](2)(H2O)(2)center dot 4H(2)O (M=Mn, Fe, Co, Ni, Cu, Zn): Their utilization for stoichiometric spinel oxides and the crystal structure of Ni[Co(en)(2)(SO3)(2)](2)(H2O)(2)center dot 4H(2)O
Kp. Hong et al., Trinuclear complexes M[Co(en)(2)(SO3)(2)](2)(H2O)(2)center dot 4H(2)O (M=Mn, Fe, Co, Ni, Cu, Zn): Their utilization for stoichiometric spinel oxides and the crystal structure of Ni[Co(en)(2)(SO3)(2)](2)(H2O)(2)center dot 4H(2)O, B KOR CHEM, 20(2), 1999, pp. 163-167
Trinuclear complexes of the general formula M[Co(en)(2)(SO3)(2)](2)(H2O)(2)
. 4H(2)O (M=Mn, Fe, Co, Ni, Cu, Zn) were synthesized. The crystal structure
of one of the compounds in the series, Ni[Co(en)(2)(SO3)(2)](2)(H2O)(2). 4
H(2)O were determined by single crystal X-ray diffraction studies. It cryst
allizes in a monoclinic unit cell (a=10.079(1), b=11.560(1), c=12.699(1) An
gstrom, beta=101.8(1)degrees, V=1448.4(2) Angstrom(3)). In the structure, a
nickel atoms is bonded to two [Co(en)(2)(SO3)(2)](-1) through the oxygen a
toms of the sulfite ligands that have Co-S bonds. Thermolysis of the com pl
exes for M=Mn, Co, Cu, Zn in air at as low as 750 degrees C resulted in spi
nel oxides while the M=Ni compound resulted in a solid solution of rock sal
t type CoO and NiO. The Fe complex did not produce a single phase oxide but
a mixture of M2O3 (M=Fe, Co) and spinel type compound.